:root {
  --sw-primary: #0066ff;
  --sw-primary-hover: #0052cc;
  --sw-bg: #ffffff;
  --sw-surface: #f4f6f9;
  --sw-text: #12161f;
  --sw-muted: #525b6e;
  --sw-border: #e2e8f0;
  --max-w: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background: var(--sw-bg); color: var(--sw-text); line-height: 1.65; }
a { text-decoration: none; color: inherit; }

header {
  position: sticky; top: 0; z-index: 999;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sw-border);
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 40px; height: 72px;
}
.logo-box { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 1.2rem; }
.logo-box img { width: 38px; height: 38px; object-fit: contain; }
nav ul { display: flex; list-style: none; gap: 28px; align-items: center; }
nav a { color: var(--sw-muted); font-size: 0.95rem; font-weight: 500; transition: color 0.2s; }
nav a:hover, nav a.active { color: var(--sw-primary); }
.cta-btn {
  background: var(--sw-primary); color: #fff; padding: 10px 24px;
  border-radius: 6px; font-weight: 600; font-size: 0.95rem;
  transition: background 0.2s, transform 0.1s;
}
.cta-btn:hover { background: var(--sw-primary-hover); color: #fff; transform: translateY(-1px); }

footer {
  background: var(--sw-surface); border-top: 1px solid var(--sw-border);
  padding: 50px 0 30px; color: var(--sw-muted); font-size: 0.9rem;
}
.footer-grid {
  max-width: var(--max-w); margin: 0 auto; padding: 0 20px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px;
}
.footer-col h4 { color: var(--sw-text); margin-bottom: 16px; font-size: 1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a:hover { color: var(--sw-primary); }
.footer-copy {
  max-width: var(--max-w); margin: 40px auto 0; padding: 20px 20px 0;
  border-top: 1px solid var(--sw-border); text-align: center; font-size: 0.85rem;
}

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.hero { text-align: center; padding: 90px 20px 50px; }
.hero h1 { font-size: 3.2rem; font-weight: 800; letter-spacing: -0.8px; margin-bottom: 20px; color: var(--sw-text); }
.hero p { font-size: 1.2rem; color: var(--sw-muted); max-width: 680px; margin: 0 auto 35px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin: 50px 0; }
.feature-card {
  background: var(--sw-surface); border: 1px solid var(--sw-border);
  border-radius: 12px; padding: 35px 30px; transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
.feature-card i { font-size: 2.2rem; color: var(--sw-primary); margin-bottom: 20px; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 12px; color: var(--sw-text); }
.feature-card p { color: var(--sw-muted); font-size: 0.95rem; }

@media(max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.3rem; }
}